* {
    margin: 0;
    padding: 0;
}

a {
    color: #333;
    text-decoration: none;
}

input,
button {
    outline: none;
    border: 0;
}

ul,
li {
    list-style: none;
}


/* 设置根元素字体大小 */

html,
body {
    font-size: 10px !important;
}

@media screen and(min-width:375px) {
    html,
    body {
        font-size: 10px !important;
    }
}

@media screen and(min-width:414px) {
    html,
    body {
        /* 10*414/375=11.04 */
        font-size: 11.04px !important;
    }
}

@media screen and(min-width:768px) {
    html,
    body {
        /* 10*768/375=20.48 */
        font-size: 20.48px !important;
    }
}